Is it normal for Metformin 500mg to cause fatigue, lethargy, and fizzy urine if one has Type 2 diabetes?

All of us have the experience of feeling tired at times, but roughly 20 to 30% of the population can have excessive daytime sleepiness. The two commonest complaints that cause patients to seek treatment at a Sleep Disorders Clinic are insomnia (not being able to sleep at night) and excessive daytime sleepiness (EDS). People who have excessive sleepiness feel drowsy and sluggish most days and these symptoms often interfere with their daily functioning. Their work, school, activities, or relationships can be affected by their sleepiness.

From a biomedical perspective, a stroke occurs when blood supply to the brain is interrupted, causing brain cells to lose their function thus leading to the signs and symptoms commonly observed. There are two main types of stroke: Ischaemic stroke occurs due to blockage of blood vessel, limiting blood flow to the brain. It is the most common, accounting for 74% of stroke in Singapore. Haemorrhagic stroke occurs due to rupture of blood vessel, causing bleeding into the brain. This makes up 24% of stroke in Singapore.